Im using a MAF system, what is required for speed sensor system?
Unless you have a way or means to install a factory VSS that is mounted on the speedometer head, you will need the VSS adapter (see question above). Also you will need the speed sensor buffer that was installed in the Firebirds (1986-89) because they used the electronic speedometer. see previous page. The VSS signal is feed through the adapter and the buffer splits the signal to the ecm, electronic cruise and if equipped, electronic speedometer. Most people will opted for the VSS adapter and buffer set up because it is much easier than trying to fabricate a VSS on the speedometer and my MAF harnesses are set up for this, unless otherwise requested.